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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Because it’s a key generated by the OP for the RP and passed to the RP in the ID Token itself. Being self-issued, there is no place to store the key.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"> -- Mike<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
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<p class="MsoNormal"><b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif"">From:</span></b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif""> Anthony Nadalin
<br>
<b>Sent:</b> Wednesday, January 23, 2013 8:10 AM<br>
<b>To:</b> Mike Jones; John Bradley<br>
<b>Cc:</b> openid-specs-ab@lists.openid.net<br>
<b>Subject:</b> RE: [Openid-specs-ab] user_jwk claim name<o:p></o:p></span></p>
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<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Why is this an actual JWK and not a key identifier ?<o:p></o:p></span></p>
<p class="MsoNormal"><a name="_MailEndCompose"></a><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
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<p class="MsoNormal"><b><span style="font-size:11.0pt;font-family:"Calibri","sans-serif"">From:</span></b><span style="font-size:11.0pt;font-family:"Calibri","sans-serif"">
<a href="mailto:openid-specs-ab-bounces@lists.openid.net">openid-specs-ab-bounces@lists.openid.net</a> [<a href="mailto:openid-specs-ab-bounces@lists.openid.net">mailto:openid-specs-ab-bounces@lists.openid.net</a>]
<b>On Behalf Of </b>Mike Jones<br>
<b>Sent:</b> Wednesday, January 23, 2013 5:00 AM<br>
<b>To:</b> John Bradley<br>
<b>Cc:</b> <a href="mailto:openid-specs-ab@lists.openid.net">openid-specs-ab@lists.openid.net</a><br>
<b>Subject:</b> Re: [Openid-specs-ab] user_jwk claim name<o:p></o:p></span></p>
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<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">OK, please review this new definition then. (It was previously missing from all the specs.) It may be to OP-centric, given your comments below.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN" style="font-family:"Verdana","sans-serif";color:black">user_jwk<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in"><span lang="EN" style="font-family:"Verdana","sans-serif";color:black">OPTIONAL. Public key value used to check the signature of an ID Token issued by a self-issued OpenID Provider, as specified in Section 5 of
[OpenID.Standard]. The key is in JWK format. Use of the </span><tt><span lang="EN" style="font-size:10.0pt">user_jwk</span></tt><span lang="EN" style="font-family:"Verdana","sans-serif";color:black"> Claim is REQUIRED when the OP is a self-issued OP and is
NOT RECOMMENDED when the OP is not self-issued.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"> Thanks,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"> -- Mike<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
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<p class="MsoNormal"><b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif"">From:</span></b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif""> John Bradley [<a href="mailto:ve7jtb@ve7jtb.com">mailto:ve7jtb@ve7jtb.com</a>]
<br>
<b>Sent:</b> Wednesday, January 23, 2013 4:56 AM<br>
<b>To:</b> Mike Jones<br>
<b>Cc:</b> <a href="mailto:openid-specs-ab@lists.openid.net">openid-specs-ab@lists.openid.net</a><br>
<b>Subject:</b> Re: [Openid-specs-ab] user_jwk claim name<o:p></o:p></span></p>
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<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">The JWK is tied to the sub not the OP. The OP may have multiple keys if it has multiple persona.<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">If we change it, sub_jwk would work. I don't think op_jwk is correct.<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">On 2013-01-23, at 5:13 AM, Mike Jones <<a href="mailto:Michael.Jones@microsoft.com">Michael.Jones@microsoft.com</a>> wrote:<o:p></o:p></p>
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<p class="MsoNormal" style="margin-bottom:12.0pt"><o:p> </o:p></p>
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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif"">What should the “user_jwk” claim be called? I suspect we named it “user_jwk” to be parallel with “user_id”, but we've since changed the name “user_id” to “sub”. This claim
contains the self-issued OP's public key that is used to check the signature of the ID token.<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif""> <o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif"">The name “op_jwk”, for one thing, seems better than “user_jwk”. I say that because (I don't think) it's a key that's specific to the user. It's a key that's specific to
the OP.<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif""> <o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif"">I’m asking this now, because while we’re continuing to tweak some names to be more intuitive before we issue the implementer’s drafts, we should stop making breaking changes
if at all after the implementer’s drafts are out.<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif""> <o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif"">Any other preferences/ideas?<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif""> <o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif""> Thanks,<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif""> -- Mike<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif""> <o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:13.5pt;font-family:"Helvetica","sans-serif"">_______________________________________________<br>
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<p class="MsoNormal"><o:p> </o:p></p>
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